Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
11 2
GBP
|
13 1
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
413,000,000
GBP
|
457,000,000
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
1,000,000
GBP
|
2,000,000
GBP
|
— |
| Prepayments and accrued income including contract assets [abstract] | |||
| Accrued income including contract assets [abstract] | |||
| Contract assets |
10,000,000
GBP
|
9,000,000
GBP
|
— |
| Categories of financial assets [abstract] | |||
| Financial assets |
4 3 , 617
GBP
|
47, 56 5
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1, 7 8 2
GBP
|
2,06 4
GBP
|
1, 9 21
GBP
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
1,000,000
GBP
|
–
GBP
|
— |
| Miscellaneous assets [abstract] | |||
| Derivative financial assets |
40,000,000
GBP
|
14,000,000
GBP
|
— |
| Loans and advances | — | — | — |
| Loans and advances to customers |
34,000,000
GBP
|
29,000,000
GBP
|
— |
| Miscellaneous liabilities [abstract] | |||
| Derivative financial liabilities |
20,000,000
GBP
|
15,000,000
GBP
|
— |
| Investment contracts liabilities |
38, 1 86
GBP
|
41, 0 71
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
115,000,000
GBP
|
11 6
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
989,000,000
GBP
|
1, 4 8 2
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Reserve of share-based payments |
41,000,000
GBP
|
42,000,000
GBP
|
— |
| Capital redemption reserve |
346,000,000
GBP
|
17,000,000
GBP
|
— |
| Merger reserve |
–
GBP
|
25,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
4 6 , 4 17
GBP
|
5 0 , 74 0
GBP
|
— |
| Liabilities |
44,869,000,000
GBP
|
49, 0 01
GBP
|
— |
| Assets less current liabilities [abstract] |